【摘要】 空间数据共享和互操作一直是GIS应用的瓶颈问题,尤其随着网络应用的发展,矛盾越来越尖锐。在目前可能的解决方案中,构建数据访问中间件是一种比较理想的模式。该文基于OGC规范,提出并实现了ComGIS空间数据访问中间件。ComGIS较好地屏蔽了多源空间数据的异构性和复杂性,支持异构空间数据的共享和互操作。更多还原

【Abstract】 Spatial data sharing and interoperability have always been the bottleneck problem of GIS applications,particularly with the development of network technology.Of all possible solutions,spatial data access middleware is considered to be one of the best.This paper designs and implements a concrete spatial data access middleware-ComGIS,based on the OGC specification.It shields the heterogeneity and complexity among multi spatial data sources,and provides a feasible way to conduct spatial data sharing and ensure the interoperability.更多还原